Watch-barrel.



O. B. DE LONG.

WATCH BARREL.

APPLICATION FILED MAY 1.1909.

1,008,793. Patented Nov. 14, 1911.

WITNESSES IN VENTOR U l .c 7/ the county Uj. much -li)0, in A suite oi llliois, have In;

and useful improvements in Walclrliarreis, of which the following is specification.

My invention relates to that type of motor barrel for watches wherein the Chet wbeei is made rigid with e hollow winding zirbor set co-exiiilly within the spring barrel and surrounding the main arbor of the barrel, and wherein the spring is wound from its inner end, being detachsbly connected to said hollow winding arbor.

Among the principal objects of the invention are to simplify the construction of this part of the watch. movement; to ttacilr tzite the assembling of the port.:; to secure go o high degree of accuracy in the positioning of thcpsrts; to make p ible the removal of the plate or bridge with the ratchet intact, by simply removing l piste screws.

leaving the barrel and spring and the attachmerits of the spring both the barrel and. the hollow winding arbor intact.

To these ends my inv ntion compel- 1 among its principal no. structural tures, the provision of 21 pound twoso part hollow win-di "f e p:

which is ecured to t tmid is n'iovable with plate while tinner end oi? the or tion of the it 1 tion of the v n 'Wli rig ratchetibrn'ied n internally threi d dependingbeerlug 2 which exmtly and revolves .in a circular bearing in the barrel bridge 1. The boss is formed with an internal shoulder 2 against which bears an annular flange 3 formed the base of the jewel setting this latter conteining the upper jewel 30. l0 designates the upper or inner section of a compound or two-pert hollow winding arbor, of which 8 designates the outer or lower section. The section is externally threaded at its upper end to engage the bearing boss 2* of the ratchet and clamp the jewel setting 3 securely in position. immediately below the threaded portion, said. winding section 10 is provided with a lateral annular shoulder or flange 1O which constitutes an abutment or stop for the upper end of the lower section 8 of the winding arbor. The sections 1i) and 8 are adapted to telescope, and their intertitting surfaces are made non-circular, (preferably square) so that, when telescoped, the rotation oi? the inner section imparted by the ratchet. wheel transmitted without lost motion to the outer section, to o lug 9 on which is oneliored the inner end of the usual main spring 31. *min spring is housed within main spring barrel 7 having the usual. ernel formed theieor for transmittmg the I" tire power of ing: the S sin. The berrci 'd r nioun e6, by

coded. engog l n or 7 slimzlder 10- -ecarbor, ion 8 is concaved 10 is coriv, when 0 register with each other, the section readily drops within the section 8, at the same time accuthereon exerts a slight lifting effect on sec-" tion 8 forcing the latter against the shoulder 10 of the companion section 10 and raising its lower end out of frictional drag on the central boss of the barrel 7 through which the main arbor 4 passes.

position on the lower plate 5.

From the foregoing it will readily be seen that when the bridge plate with the ratchet is removed from the bridge, the male portion '10;.of the winding arbor will readily sepa rate from the female portion 8, leaving the {complete barrel with the main spring and the portion 8 inclosed, all intact in proper Hence, in order to get at the main spring for renewal or" repairs it is necessary only to remove the screws which secure the bridge 1 in place,

and raise the latter with the ratchet wheel, upper jewel and its setting, and upper section of the winding arbor all intact therein and replaceable into working position by simply replacing and securing the bridge plate. By dispensing with the necessity of removing numerous screws and taking out separate parts in order to get at the main spring, the device of my invention obviously presents a considerable saving in the time and expense involved in assembling and repair work, aside from affording a simpler,

more accurate, more reliable, and less expensive construction than those now in use.

I claim:

1. In a watch-winding mechanism, the combination with a bridge plate, of a ratchet wheel journaled thereon, a main arbor, a spring barrel fast on said main arbor, a main spring in said barrel, and a hollow two-part telescoping winding arbor having one of its parts secured to said ratchet wheel and the other of its parts constituting an anchor for the inner end of the main spring, said parts having a straight longitudinal sliding fit the one within the other, substantially as described.

2. In a watch-winding mechanism, the combination with a bridge plate, of a ratchet wheel having a depending boss mounted to turn therein, a spring barrel, a main spring therein, a main arbor carrying said barrel, and a hollow two-part telescoping winding arbor having one of its parts secured to said ratchet wheel and the other of its parts constituting an anchor for the inner end of the main spring, said parts having a straight longitudinal sliding fit the one within the other, substantially as described.

3. In a watch-winding mechanism, the

weaves combination with a bridge plate, of a ratchet wheel having an internally threaded depending boss mounted to turn therein, a spring barrel, a main spring therein, a main arbor carrying said barrel, and a hollow two-part telescoping winding arbor, one of the parts whereof has threaded engagement at its upper end with the depending boss of said ratchet wheel, and the other of which parts constitutes an anchor for the inner end of the main spring, substantially as described.

4. In a watch-winding mechanism, the combination with a bridge plate, of a centrally apertured ratchet wheel having an internally threaded and shouldered depending boss mounted to turn therein, a jewel setting mounted in the aperture of said ratchet wheel and having a flange engaging the internal shoulder of said boss, a jewel in said setting, a spring barrel, a main spring therein a main arbor having an upper bearing in said jewel and carrying said barrel, and a hollow two-part telescoping windingarbor surrounding said main arbor, the up er of whose parts has threaded engagement at, its upper end with the depending boss of said ratchet wheel and clamps said jewel setting against said shoulder, and the lower of which parts lies within said barrel and constitutes an anchor for the inner end of the main spring, substantially as described.

5. In a watch-winding mechanism, the

combination with a bridge plate, of a ratchet wheel having a jewel bearing and a depending boss mounted to turn therein, a spring barrel, a main spring therein, a main arbor carrying said barrel and at its upper end journaled in said jewel bearing, and a hollow two-part telescoping winding arbor having one of its parts secured in the boss of said ratchet wheel and formed with an annular flange below said boss and the other of its parts constituting an anchor for the inner end of the main spring and at its upper end abutting against said annular flange, substantially as described.

6. In a watch-winding mechanism, the combination with a bridge plate, of a ratchet wheel having a depending boss mounted to turn therein, a spring barrel, a main spring therein, a main arbor carrying said barrel, and a hollow two-part telescoping winding arbor, one part of which is secured in said boss, and the other part of which constitutes an anchor for the inner end of the main spring, the meeting ends of said parts being respectively convexed and concaved to facilitate their registration, substantially as described.

CHARLES E. DE LONG. [L.S.]

\Vitnesses:

FRED MoIN'rYnE, H. S. DIXON. 

